what part of the country is the closest to a feudalist system?

[Dereich]

Feudalism was all about exchange between different estates in an ordered society; I'd be amazed if something like that has ever existed in the area covered by the U.S.A. Of course the word feudal is misused almost as much as the word fascist.

A message Simfan asked me to pass along: The Hudson valley during the patroonage era was literally feudalist.